jnlt3 / blackmarlin

WIP Chess Engine
GNU General Public License v3.0
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Low depth double extensions #261

Closed jnlt3 closed 6 months ago

jnlt3 commented 6 months ago

Low depth singular double extend if static evaluation is significantly lower than alpha.

Passed STC:

Elo   | 2.53 +- 2.02 (95%)
SPRT  | 8.0+0.08s Threads=1 Hash=8MB
LLR   | 2.98 (-2.94, 2.94) [0.00, 4.00]
Games | N: 36018 W: 9003 L: 8741 D: 18274
Penta | [313, 4281, 8588, 4485, 342]

Passed LTC:

Elo   | 1.24 +- 0.98 (95%)
SPRT  | 40.0+0.40s Threads=1 Hash=64MB
LLR   | 2.96 (-2.94, 2.94) [0.00, 3.00]
Games | N: 119670 W: 27574 L: 27147 D: 64949
Penta | [303, 13366, 32068, 13797, 301]